I also have that utility, but it doesn't have that kind of functionality.
These utilities are generic insofar as they're able to manipulate file names which have separate words, but complicated functions, no way.

Each time you push 'Rename', one space at most is added to a filename. Thus, you'll have to push 'Rename' multiple times, until no more changes are made. Make sure to run this on copies at first, in case there are bugs in the above solution, since I didn't test it thoroughly.